Blogs Articles Organizations Biography Jack's Book Contact Information Links

Navigation: SOS Sisson > Traumatic Injury Blog


Jack Sisson's TBI Blog

A hug is duct tape for the soul.

 
From CTV News:

Older people with low levels of vitamin B12 in their blood may be more likely to develop problems with their thinking skills and have more brain shrinkage, a new study suggests. A growing body of research is drawing a link between low B12 and early cognitive decline, a condition that often leads to dementia.

Previous research has found that those people with high levels of vitamin B12 in their blood have lower levels of an amino acid called homocysteine, which some studies have linked to an increased risk of Alzheimer's disease, memory loss, and stroke.

This new study looked at 121 people over the age of 65 in Chicago. Researchers analyzed their blood for levels of vitamin B12 and B12-related metabolites that can indicate a B12 deficiency. The participants also took tests measuring their memory and other cognitive skills.

After an average of four-and-a-half years, the researchers had the participants do the cognitive tests again. They also took MRI scans of the participants' brains to measure their total brain volume and look for other signs of brain damage. They found that having high levels of four of five markers for vitamin B12 deficiency was associated with having lower scores on the cognitive tests and smaller total brain volume.

On the cognitive tests, the scores ranged from -2.18 to 1.42, with an average of 0.23. For each increase of one micromole per liter of homocysteine, the cognitive scores decreased by 0.03 points.

The results appear in the journal Neurology.

According to Health Canada, the recommended daily allowance of vitamin B12 for adults is 2.4 micrograms. More information can be found on the Health Canada website.

Interestingly, the concentrations of all vitamin B12–related markers were linked with better cognitive test scores and higher total brain volume -- but not the blood levels of vitamin B12 itself.

Study co-author Dr. Martha Clare Morris, of Rush University Medical Center, said low vitamin B12 can be difficult to detect in older people when looking only at blood levels of the vitamin. "Looking for vitamin B12 in blood not a good marker," she told CTV News. "We need to have better clinical measures to identify people who have marginal or low vitamin B status."

She said doctors should be testing instead for homocysteine levels. She also said there wasn't enough evidence yet to recommend that all seniors take the vitamin in supplement form.

Labels: , , ,


TBI Film Reviews
TBI Book Reviews
Traumatic Brain Injury Law Blog
Brain Blog
NeuroNotes
Brain Blogger
SoapBlox/Chicago: Protecting Our Troops
Head Injury Survival Journal
Losing the Physical Self

Tower of Hanoi: Instructions for this popular puzzle can be viewed simply by clicking the Instructions button on that page.

May 2005   June 2005   July 2005   August 2005   September 2005   October 2005   November 2005   August 2006   September 2006   October 2006   December 2006   January 2007   February 2007   March 2007   April 2007   May 2007   June 2007   July 2007   August 2007   September 2007   October 2007   November 2007   December 2007   January 2008   February 2008   March 2008   January 2009   March 2009   April 2009   December 2009   April 2010   May 2010   June 2010   July 2010   August 2010   September 2010   October 2010   November 2010   January 2011   February 2011   March 2011   April 2011   May 2011   June 2011   July 2011   August 2011   September 2011   October 2011   November 2011   December 2011   January 2012   February 2012   March 2012   April 2012   May 2012   June 2012   October 2012   November 2012   December 2012   January 2013   February 2013   March 2013   April 2013   May 2013   June 2013   October 2013  

only sossisson.com

This page is powered by Blogger. Isn't yours?

FindingBlog - Blog Directory